Frameshift deletion of bases 4:625346 and 4:625347 , based 4:625345 changed from T to A, and base 4:625344 changed from G to A resulting in the addition of KG after asparagine 79 of all mav isoforms and premature truncation after these novel amino acids.
Bases 4:625344..625347 (GCTG) of mav are replaced with "AA" leading to a frameshift and early translation termination after the additon of 2 novel amino acids (KG).